Question 225 of 1,616
Troubleshooting and OptimizationmediumMultiple ChoiceObjective-mapped

Lambda FunctionError Unhandled — Uncaught Exception Causes

This DVA-C02 practice question tests your understanding of troubleshooting and optimization. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Network Topology
$ aws lambda invokefunction-name my-functionpayload '{"key": "value"}' response.jsonRefer to the exhibit."StatusCode": 200,"FunctionError": "Unhandled","LogResult": "U1RBUlQgUmVxdWVzdElkOiAxMjM0NTY3OC0x...","ExecutedVersion": "$LATEST"

Refer to the exhibit. A developer invoked a Lambda function and received this response. What does the FunctionError field indicate?

Network Topology
$ aws lambda invokefunction-name my-functionpayload '{"key": "value"}' response.jsonRefer to the exhibit."StatusCode": 200,"FunctionError": "Unhandled","LogResult": "U1RBUlQgUmVxdWVzdElkOiAxMjM0NTY3OC0x...","ExecutedVersion": "$LATEST"

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

The function threw an unhandled exception.

Option B is correct because FunctionError: Unhandled indicates that the function threw an exception that was not caught by the code. Option A is wrong because StatusCode 200 means invocation succeeded. Option C is wrong because throttling would return 429. Option D is wrong because configuration errors would return 400.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • The function executed successfully.

    Why it's wrong here

    FunctionError indicates an error.

  • The function threw an unhandled exception.

    Why this is correct

    Unhandled means the error was not caught.

    Related concept

    Read the scenario before looking for a memorised answer.

  • The function was throttled.

    Why it's wrong here

    Throttling returns a different status code.

  • The function timed out.

    Why it's wrong here

    Timeout would be a different error.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

  • Read the scenario before looking for a memorised answer.
  • Find the constraint that changes the correct option.
  • Eliminate answers that are true in general but not in this case.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

Quick reference

Cloud Service Model Comparison

ModelYou ManageProvider ManagesExamples
IaaSOS, runtime, apps, dataHardware, hypervisor, networkingEC2, Azure VMs, GCP Compute Engine
PaaSApps and dataOS, runtime, middleware, hardwareElastic Beanstalk, Azure App Service
SaaSData and settings onlyEverything elseMicrosoft 365, Salesforce, Workday
FaaS / ServerlessFunction code onlyInfra, scaling, runtimeLambda, Azure Functions, Cloud Run
CaaSContainers and appsKubernetes, OS, hardwareEKS, AKS, GKE

What to study next

Got this wrong? Here's your next step.

Identify which DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

Related practice questions

Related DVA-C02 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Practice this exam

Start a free DVA-C02 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

FAQ

Questions learners often ask

What does this DVA-C02 question test?

Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The function threw an unhandled exception. — Option B is correct because FunctionError: Unhandled indicates that the function threw an exception that was not caught by the code. Option A is wrong because StatusCode 200 means invocation succeeded. Option C is wrong because throttling would return 429. Option D is wrong because configuration errors would return 400.

What should I do if I get this DVA-C02 question wrong?

Identify which DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Same concept, more angles

1 more ways this is tested on DVA-C02

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. A developer invokes a Lambda function from the AWS CLI and receives the response shown in the exhibit. The output file contains an error message. What is the MOST likely cause of the FunctionError field being set to 'Unhandled'?

medium
  • A.The function's execution role does not have permission to write to CloudWatch Logs.
  • B.The invocation request payload exceeded the 6 KB limit for synchronous invocation.
  • C.The function code threw an uncaught exception.
  • D.The function timed out before completing execution.

Why C: The 'FunctionError' field set to 'Unhandled' indicates that the Lambda function failed with an error that was not caught by the function's code, such as an uncaught exception. This is the most likely cause. Option A is incorrect because permission errors to CloudWatch Logs would result in a 403 error, not an 'Unhandled' error. Option B is incorrect because the payload size limit for synchronous invocation is 6 MB, not 6 KB; exceeding limits would cause a 413 error, not 'Unhandled'. Option D is incorrect because a timeout would return a 200 status code with 'FunctionError' set to 'Unhandled', but the most common 'Unhandled' error is an uncaught exception, making option C the most likely cause.

Keep practising

More DVA-C02 practice questions

Last reviewed: Jun 20, 2026

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

Sign in to join the discussion.

This DVA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DVA-C02 exam.